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您好,您是采用的自动协商模式还是force 100Mbps mode?如果是自动协商的话,可以配置为force 100Mbps mode。
速率从100M变成10M,有可能是提供时钟的晶振导致的,测量下晶振是否有很大的jitter,以及相位噪声很大?